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Plasma impinging stream reaction method

A technology of plasma and colliding flow, applied in chemical instruments and methods, chemical/physical/physicochemical processes of energy application, hydrocarbons, etc., can solve the problem of short residence time, insufficient heating of coal powder particles, Low gasification rate and other problems, to achieve the effect of prolonging equipment life, prolonging energy utilization and improving reaction efficiency

Active Publication Date: 2012-10-03
XINJIANG TIANYE GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of short residence time of pulverized coal in the high-temperature plasma jet, insufficient heating of pulverized coal particles, and low gasification rate, and further provide a method for premixing the pulverized coal jet with the high-temperature jet of the plasma torch. And after heating and accelerating, the same jet collides with it, realizing the three processes of acceleration, deceleration and re-acceleration of coal powder particles. The plasma jet and coal powder particles maintain a high relative speed, while the coal powder stays in the high temperature area The time is extended to strengthen the mixing and heat transfer process of pulverized coal and high-temperature plasma jet, and enhance the gasification effect of pulverized coal

Method used

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Embodiment 1

[0022] See attached figure 1 And attached figure 2 , a method for reacting plasma to impinging flow, comprising installing a 1MW plasma torch 1 and a mixer 4 around the outer wall of a reactor 2, and installing a 1MW plasma torch on the top of the reactor 2. The plasma torch 1 at the top of the reactor 2 is used to heat the reaction device. The pulverized coal enters the mixer 4 from the feed pipe 3 and is sprayed into the high-temperature jet generated by the plasma torch. The four high-temperature plasma jets entrained with coal particles collide with each other. To enhance the mixing and heat transfer of pulverized coal and high temperature plasma.

Embodiment 2

[0024] See attached image 3 Embodiment 2 of the device differs from Embodiment 1 in that no plasma torch is installed on the top of the reactor 2, that is, no plasma jet is generated at the top of the reactor 2, and the power of the plasma torch 1 installed on the peripheral outer wall is 1KW.

Embodiment 3

[0026] The difference between embodiment 3 and embodiments 1 and 2 is that 6 plasma torches 1 and mixers 4 are coaxially and evenly distributed on the circumference of the same plane of the reactor 2, and the power of the plasma torch 1 is 10 MW.

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Abstract

The invention relates to a plasma impinging stream reaction method, and particularly relates to a reaction method of heating and accelerating coal powder by high-temperature plasma jet and then impinging to reinforce the mixing and the heat transmission. The method disclosed by the invention adopts two or more groups of plasma torches and mixers coaxially arranged around the external wall of a reactor in the same direction; in a working process, the coal powder is conveyed into the mixers through material feed pipes to deliver into the high-temperature plasma jet generated by plasmas, and then is impinged with the identical plasma jet in a central area of the reactor after being heated and accelerated so as to form an impinging stream turbulence area to reinforce the mixing and the heat transmission of the coal powder and the high-temperature jet.

Description

technical field [0001] The invention relates to a method for reacting plasma against flow. technical background [0002] The technology of plasma cracking coal to acetylene is to inject coal powder directly into the high-temperature plasma with a temperature of 3500 to tens of thousands of degrees by virtue of the high plasma temperature and the close carbon-hydrogen ratio characteristics of coal with good reactivity and acetylene. A very fast explosion occurs, releasing the volatile matter in the coal. In addition, the high-temperature plasma also interacts with solid carbon to generate a large amount of cracked gas of hydrocarbon components, which quickly reaches chemical equilibrium and forms a gas mainly composed of acetylene and hydrogen. Pyrolysis gas, thermal plasma cracking coal to acetylene process is a reaction process operated under extreme conditions, ultra-high temperature and millisecond contact time, the mixing and heat transfer of pulverized coal and high-tem...

Claims

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Application Information

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IPC IPC(8): B01J19/08C07C1/00C07C11/24
Inventor 黄峥嵘熊新阳刘军李永宏李自兵徐勇幕龙唐复兴周延红唐彬阳小东万振国池建忠
Owner XINJIANG TIANYE GRP